Fancy knitting attachment for knitting machines



L. TLUCKA. FANCY KNITTING ATTACHMENT FOR KNITTING MACHINES.

APPLICATION FILED JUNE 18. 1921. 1,427,983. PatentedSept. 5, 1922.

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INVENTOR Zou' BY vs' ATTOREY L. TLUCKA.

FANCY KNITTING ATTACHMENT FOR KNITTING MACHINES.

' APPLICATION FILED JUNE 18, 1921. 427 9 3 PatentedSept. 5, 1922.

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BY is Ania? I L. TLUCKA.

FANCY KNITTING ATTACHMENT FOR KNITTING MACHINES.

' APPLICATION FILED JUNE I8, 1921.

'1 ,427,983 PatentedSept. 5, 1922.

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, BY&/s ATTORNEY I Wm M L. TL'UCKA.

FANCY KNITTING ATTACHMENT FOR KNITTING MACHINES.

- APPLICATION FILED JUNE 18, 1921.

1,427,983. v PatentedSept. 5, 1922.

5 SHEETS-SHEET 4.

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APPLICATION FILED JUNE 18, 1921.

Patented. Sept. 5, 19229 I 5 SHEETSr-SHEET 5.

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LOUIS TL'UCKA, 0F BOONTON, NEW JERSEY, ASSIGNOR TO VAN RAALTE COMPANY, ING, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

FANCY KNITTING- ATTACHMENT FOR KNITTING MACHINES.

Application filed June 18, 1921. Serial No. 478,460.

To all whom it may concern:

Be it known that I, LOUIS TLUGKA, a citizen of the United States, and a resident of Boonton, county of Morris, and State of New Jersey, have invented a new and useful Improvement in F ancy Knitting Attachments for Knitting Machines, of which the following is a specification.

The object of .my invention is to provide an attachment of the type in question which may be applied to any suitable-knitting machine and particularly those known as the Cotton type.

A further object is to provide a device which will enable the knitting machine to make lock stitches. These objects are accomplished by my invention, one embodiment of which is hereinafter more particularly set forth. M 7 J A further object of this invention is to provide a meansfor regulating the stitches formed by the usual form of knitting machine whereby suitable designs may be formed in stockings or other knitted articles.

For a more detailed description of my'invention, reference is to be had to the accompanying drawings, forming a part hereof. in which- Figure 1. is a front elevation'of a portion of a machine embodying my invention and showing a portion of the knitting machine to whichit is applied,

Figure 2 is a enlarged side elevation of my attachment, separated from the knitting machine,

Figure 3 isa plan viewof the same, Figure 4 is an end elevation of my attachment with parts removed to .clearly revea the structure,

Figure 5 shows a detail of construction relating to the chain feed mechanism, and

Figure 6 is a. longitudinal section taken on the lines 6-6 of Figure 3, looking in the direction of the arrows; 7

Throughout the various views of the drawings, similar reference characters designate similar parts. 7 v,

1 indicates my improved attachment which maybe applied to any suitable machine, as a Cotton knitting machine of the character used for making full fashioned hosiery and which is driven by a main shaft 3 that is extended so as to drive my im proved attachment. The knitting machine is. also provided with a knitting shaft .4

' which carries transfer points 5 in the con- 'ventional manner.

This shaft 4: is moved longitudinally to the right as shown in Figure 1 bya coil spring 6 which surrounds a portion of the shaft 4 and bears at one end against a collar Twhich is fixed to the shaft and at its other end the spring bears against a portion 8 of the machine 2. The extreme endof this shaft 4, which is next the attachment 1, carries an adjusting screw 9 which may be adjusted to suit the needs of the machine or to take up wear. My attachment 1 acts in opposition to the spring 6 so as to force the shaft 4 in the direction of its length, at suitable times, nature of the fancy work which is to be incorporated into the fabric of the stockings or other articles which are knitted by the machine.

My improved attachment 1 is mountedin and on a suitable frame 10 in which the end of the main shaft 3 is suitably journaled. This main shaft 3 carries two double cams lland 12 and-a single cam 13, which cams will operate according to the position of the shaft 3, which has a sufficient longitudinal movement to enable the proper face of these double cams to become operative in a. manner which will be described below.

,The'cam 13 is broad faced and always works the same regardless of the position, longitudinally speaking, of the shaft 3 so that this cam is not affected by the longitudinal movements of this shaft, and this cam I 13 engages a roller14 mounted on a lever 15 that is pivoted on a fulcrum shaft '16 in the conventional manner. This shaft 16 is carried by suitable brackets 17 which rise from the frame 10.

The lever 15 carries-a pawl 18 which is adapted to engage'a ratchet 19 which is fixed to ashaft 20 mounted in suitable bearings-21 which extend from the frame 10 of the machine. This shaft 20 also carries a "drum 22 with sprocket wheels 23 fixed there- 100.

on and the drum 22 is fixed to the shaft 20 so: that it turns with the shaft under the impulse of the pawl 18 on the ratchet 19. The sprocket wheels 23 enga e a sprocket chain 24 which runs upward l pulley 25 mounted on a spindle 26 which is carriedby a suspended hanger 27 from a .suppoitfi that rises from the frame 10 of the attachment. This hanger 28- is adjustably mounted so that the slack in the chain 110- according to the 70 y to an idle this cam 13.

The extreme ends of the bearings 21 are connected bya fulcrum 30 on which are mounted anumberj'of bent levers 31, 32 and 33 respectively, which have their upper ends provided with nose portions 80 adaptedto engage the cams 29. The lower ends of each of the levers are adapted to engage and raise vertical slides 34,35 and 36, respectively, which are slidably mounted in the frame 10 so as to have a vertical movement only. These slides are kept against their respective levers by means of coil springs 37, as shown.

The pawl 18 is kept against its ratchet 19 by means of a suitable coil spring 38, as shown. When this spring is removed, the pawl 18 may be separated from the ratchet 19 and then the chain 24 will not be shifted and one style of knitting stitch may be repeated indefinitely by the machine 2.

The cam 11 has two faces 39 and 40 respect'ively, the face 39 being merely a round one which the roller 41 rests on where the lever remains at rest but raised, and the cam 40 is the active face on which the roller 41 rises and falls to function. The cams 39 and 40 operate according to the position of the shaft 3, asabove set forth, and either one may be engaged by the roller 41 mounted on a lever 42 that is fulcrumed on the shaft 16 in the conventional manner." The lever 42 has two upwardly extending ears 43 which are perforated and provided with a pivot 44 on which is mounted a link 45 which is pivotally connected to a bellcrank lever 46 fulcrumed at 47 between downwardly ex: tending ears 48 which-run downwardly from the frame 10 ofthe machine. end 49 of the bell crank lever '46 is adapted to bear against a slide 50 which 'moves between two guides 51 which are placed at the top of the frame 10 and form a part thereof. The slide 50 isprovided with a laterally extending plate 52 a ainst which the screw 9 of the shaft 4 is a apted to abut so that this shaft is moved in opposition to the spring 6 which has been described above.

' This slide 50 has a projecting portion 53 which is nor'mally kept in contact with the upper end 49 of the bell crank lever 46 by means of two coil springs 54 which connect this slide with the fixed guides 51.

The slide 50 is split into two parts, one part 55 which carries the projection 52, and

and they are The upper another part 56 which is adapted to abut against stops in the nature of screws projecting from the slides 34, 35 and 36 in a manner which will be described below. The two parts 55 and 56 are recessed at adjacent edges to receive anti-friction rollers 57, both of which press against opposite sides of a separating cam 58, and these rollers are kept against this cam by means of coil springs 59 which connect the respective parts 55 and 56 together.

The part 56 has an undercut edge 60 which is adapted to abut against cap screws 61 which form stops for the slide '50 and which are placed so that their heads are suitable distances from the slides 34, 35 and 36 respectively, to which they are attached ocked in position by means of lock nuts 62. Only one of these cap screws 61 acts at any one time.

Thelower surface of the part 56 is secured to a guiding bracket 63 which extends diagonally and downwardly and is provided with a slot 64 near its lower end in which extends a bolt 65which is carried by the cam 58 so th t this cam will be suitably guided between the rollers 57 at all times.

This cam 58 carries a pin 66 near its lower end and this pin 66 is also mounted iii a lever 67 which is fulcrumed on the fulcrum 16 and at its free end the lever 67 is provided with'a hook 68 that engages the upper end of a coil spring 69 extending to the frame 10 and secured thereto. This lever 67 also carries a cam roller 70 in the conventional manner which is adapted to engage either the frame 71 or the face 72 of the cam 12 according to the position of the shaft 3, as above set forth. The face 71 is a round one on which the roller 70 remains at one level and the face 72 is the functioning face of the cam 12.

In view of the foregoing the operation of my attachment will be readily understood, it being assumed that the function of this attachment is to move the fancy needle shaft 4 in the direction of its length at appropriate times and in opposition to the spring, 6. It is apparent from what has been said and described that this longitudinallmovement of the shaft 4 will depend upon'the movement of the slide 50 and this movement is determined by all three of the earns 11, 12 and 13, the cam 11 causing the rocking of the bell crank lever 46; the cam 12 determining the position of the cam 58 which more or less elongates the slide 50, and the cam 13 causes the cam blocks 29 to come in contact with the levers 31, 32 and 33 so as to determine which of' the cap screws 61 will be in position to stop the sliding movement of the slide 50 and thereby limit the movement of this slide in the direction of these screws.

as above set forth, give a number of posi- |come within the tions to the shaft 4 according to the pattern which is to be knitted so that a great "ariety of patterns may be knitted on a machine provided with my attachment by placing cam blocks 29, as required, both as to number, location and shape.

While I have shown and bodiment of my invention, it is obvious that it is not restricted thereto, but that it is broad enough to cover all structures that scope of the annexed described one emclaims.

Having thus I claim is z,

1. In a device of the class described, a transfer point shaft, means for shifting said shaft longitudinally, according to the pattern to be knitted, said means including a two-part slide against which said shaft is held, means for separating the parts of said slide and a plurality of adjustable abutments for limiting the one direction.

2. In a device of described my invention, What the class described,'a transfer point shaft, a slide for shifting said shaft, longitudinally, a plurality of adjustable stops for restricting movement of said slide in one direction and means for lengthening said slide.

3. In a device" of the class described, a transfer point shaft, a slide, means for resiliently retaining one end of said shaft against said slide, said slide havinga pair of separable parts, springs for drawing said parts towards one another, means slidable between the parts of said slide to separate the same, a plurality of movable stop members for restricting movement of the slide in one direction, and cam means for causing movement of said stops.

4. In a device of the class described, a transfer point shaft, a slide for longitudinally shifting said shaft, said slide having a pair of separable parts, a roller on each of said parts, a cam member movable between movement of said slide in said rollers to separate the same and lengthen the slide, a revolving drum, and endless member movable over said drum carrying a plurality of cams, levers engaged by said cams and shifted thereby, and a plurality of stops shifted by said levers, said stops being adapted to be held in the path of movement of said slide and the. shaft shifted thereby and adapted to successively limit movement of said slide and shaft in one direction.

5. In a device of the class described, a transfer point shaft, a slide for longitudinally shifting said shaft, means for moving said shaft in one direction, a plurality of stops adapted to successively limit. movement of the slide, and endless member having a plurality of cams, a plurality of levers engaged by said cams and adapted to move stops of different lengths in the path of the slide on its return movement.

6. In a device of the class described, a transfer point shaft, means for shifting said shaft longitudinally, a plurality of stops of various lengths, means for successively moving stops of various lengths in the path of movement of said shaft-moving means, said shaft-moving means comprising a 'slide composed of two separable parts, and means movable betweensaid parts to separate the same.

7. In a device of the class described comprisin a transfer point shaft, a slide, means for he ding said shaft. against the slide, said slide'having a pair of separable parts, means for holding said parts together, movable means for separating said parts, a plurality of movable cam members and means for carrying the same, a plurality of movable stops for limiting movement of the slide andmeans actuated by said cam members for shifting the stops.-

Signed at the city,-

county and State of New York, this 17th day of June, 1921.

LOUIS TLUCKA. 

